It's good English, but it's not transparent as to what future costs I might encounter if I start using the product while it's in beta, and want to continue using it in the future.

I'm happy to pay to use good software, but it's better to know the pricing plan in advance. I think that https://octopus.com/purchase provides a good example:

> Community edition is free for small teams, even for commercial use. It allows you to deploy up to five projects to up to ten target machines, and is limited to five users.

I think he wants to understand what your future pricing scheme will be before he commits to your system.